1 / 53

The Cameroon line, West Africa Mark Beaumont 1 st year PhD Grant Institute Supervisors: JRU & JGF

The Cameroon line, West Africa Mark Beaumont 1 st year PhD Grant Institute Supervisors: JRU & JGF. The Cameroon line – Where?. from Gondwana reconstruction & dispersion - University of Witwatersrand. The Cameroon line – Where?.

crescent
Download Presentation

The Cameroon line, West Africa Mark Beaumont 1 st year PhD Grant Institute Supervisors: JRU & JGF

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Cameroon line, West AfricaMark Beaumont1st year PhDGrant InstituteSupervisors: JRU & JGF

  2. The Cameroon line – Where? from Gondwana reconstruction & dispersion - University of Witwatersrand

  3. The Cameroon line – Where? from Gondwana reconstruction & dispersion - University of Witwatersrand

  4. The Cameroon line – Where? from Gondwana reconstruction & dispersion - University of Witwatersrand

  5. The Cameroon line – Where?

  6. The Cameroon line – Where?

  7. The Cameroon line – What?

  8. The Cameroon line – What?

  9. The Cameroon line – Mount Cameroon Photo – Godfrey Fitton

  10. The Cameroon line – What? Volcanoes, Cones & Ring complexes

  11. The Cameroon line – What? Volcanoes, Cones & Ring complexes Volcanic islands & Seamounts

  12. The Cameroon line – What? Volcanoes, Cones & Ring complexes Unique: straddles passive continental margin Volcanic islands & Seamounts

  13. The Cameroon line - still active Photo – Godfrey Fitton

  14. The Cameroon line – What? Geochemistry indicates: Common mantle origin

  15. The Cameroon line – What? Geochemistry indicates: Common mantle origin Ages of Continental: 66 Ma to present (extrusive @35)

  16. The Cameroon line – What? Geochemistry indicates: Common mantle origin Ages of Continental: 66 Ma to present (extrusive @35) Oceanic:31 Ma to present (earlier uplift)

  17. The Cameroon line – What? Geochemistry indicates: Common mantle origin Ages of Continental: 66 Ma to present (extrusive @35) Oceanic: 31 Ma to present (earlier uplift) But . . . . no linear age progression

  18. The Cameroon line – the Hawaii model?

  19. The Cameroon line – Regional geology from Brownfield (2006)

  20. The Cameroon line – regional context

  21. The Cameroon line – How?

  22. The Cameroon line – How? from Plate Tectonics - University of Leicester

  23. The Cameroon line – How? from Plate Tectonics - University of Leicester

  24. The Cameroon line – regional context

  25. The Cameroon line – regional context Basement lineaments & Oceanic transforms

  26. The Cameroon line – Controls? Controls ? Mantle: Thermal anomaly

  27. The Cameroon line – Controls? Controls ? Mantle: Thermal anomaly Regional context: Benue trough Basement lineaments

  28. The Cameroon line – How? Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume)

  29. The Cameroon line – How? Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume) Leaky Lineaments

  30. The Cameroon line – How? Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume) Leaky Lineaments Plate Rotation

  31. The Cameroon line – How? Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume) Leaky Lineaments Plate Rotation Y

  32. The Cameroon line – How? Y Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume) Leaky Lineaments Plate Rotation

  33. The Cameroon line – How? Suggestions ? Linear Hot Spot (Plume) Wandering Hot Spot (Plume) Leaky Lineaments Plate Rotation Mantle convection

  34. The Cameroon line – How? ?

  35. The Cameroon line – research method Tests ? Tectonic models Geochemistry Mantle models Mantle tomography

  36. The Cameroon line – research method Tests ? Tectonic models Geochemistry Mantle models Mantle tomography Seismic reflections

  37. The Cameroon line – existing seismic 2D on one transect – across oceanic CL Shows enough to suggest value of detailed 3D from Meyers & Rosendthal (1998)

  38. The Cameroon line - Oil Photo – Godfrey Fitton

  39. The Cameroon line – new seismic

  40. The Cameroon line – new seismic Kingdom software screenshot

  41. The Cameroon line – new seismic Kingdom software screenshot

  42. The Cameroon line – new seismic Kingdom software screenshot

  43. The Cameroon line – new seismic Transects every 150m Depth 6s twt Coverage ~ Midland Valley

  44. The Cameroon line – new seismic Kingdom software screenshot

  45. The Cameroon line – new seismic Kingdom software screenshot

  46. The Cameroon line – new seismic Kingdom software screenshot

  47. The Cameroon line – new seismic Kingdom software screenshot

  48. The Cameroon line – new seismic Kingdom software screenshot

  49. The Cameroon line – new seismic Kingdom software screenshot

  50. The Cameroon line – new seismic Kingdom software screenshot

More Related